If you mean the hook on the end of the base, it looks like they are there. The store's number is 1-800-989-8428 ext. 203; you could call as ask, or ask for more pictures.
And the bid is at $75.
No, there is a separate piece that attaches under the side cover on each side and extends up to receive the hook on the end of the arms on the base. Without these brackets there is no way to attach the base to the tank. The only bracket still available is the left. The right is no longer available.
I don't see any sign of them in the listing, and I doubt, that if you asked, the seller would even know what you are talking about. I hope whoever wins has access to the brackets.